Horizontal helical vane type water meter movement with adjustable impeller hydraulic dynamic balance state

The utility model provides a horizontal helical vane type water meter movement with an adjustable hydraulic dynamic balance state of an impeller. The horizontal helical vane type water meter movement comprises a mounting seat, a rectifier assembly and the impeller, a mounting opening penetrates through the side wall of the mounting seat; the rectifier assembly comprises a front rectifier and a rear rectifier, and a gap is formed between the front rectifier and the rear rectifier and forms an installation area. The impeller is rotationally mounted in the mounting area; a negative pressure area is formed between the rear end of the front rectifier and the impeller, and the negative pressure area enables the impeller to have the moving tendency of approaching the water inlet direction and generate forward suction force so as to reduce abrasion of a rear friction pair between the impeller and the rear rectifier. The horizontal helical vane type water meter movement with the adjustable impeller hydraulic dynamic b